A METHOD AND A SYSTEM OF DETECTING WINDING FAULT UNDER ONLINE OPERATION OF AN ELECTRICAL MACHINE

A method of detecting a rotor bar fault of an electrical machine, said method comprising, acquiring a set of online signals from the electrical machine over a period, said set of online signals comprising at least one vibration signal, and a summed signal of magnetic flux signals, each magnetic flux...

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Bibliographische Detailangaben
Hauptverfasser:	MANOHAR, Sai Srinivas, MUTHURAJ, Shiva Shankaranarayanan, ATHIKESSAVAN, Subash Chandar, PANDA, Sanjib Kumar, JEYASANKAR, Elango
Format:	Patent
Sprache:	eng
Schlagworte:	MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS TESTING
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Beschreibung
Zusammenfassung:	A method of detecting a rotor bar fault of an electrical machine, said method comprising, acquiring a set of online signals from the electrical machine over a period, said set of online signals comprising at least one vibration signal, and a summed signal of magnetic flux signals, each magnetic flux signal obtained from a respective flux sensor positioned on an external surface of the electrical machine; extracting an online anomaly indicator value from the set of online signals; comparing the online anomaly indicator value with a baseline anomaly indicator value of a corresponding loading condition; and determining presence of the broken or cracked rotor when the online anomaly indicator value deviates from the baseline anomaly indicator value by a threshold.